------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0 Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226 Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 ab ba d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 94 ba d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff RSP: 0018:ffffc90000dd0668 EFLAGS: 00010246 RAX: ffffffff81aacafc RBX: 0000000000000000 RCX: ffff88813ff78000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff81aaca0d R09: fffffbfff2131821 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000020003d28 R13: 0000000000000008 R14: 0000000020003d28 R15: ffffc90000dd06c8 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020003d28 CR3: 00000000796f0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_b4614f1d74b4343c+0x38/0x73c bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline] bpf_trace_run4+0x1ea/0x390 kernel/trace/bpf_trace.c:1917 __bpf_trace_mm_page_alloc+0xba/0xe0 include/trace/events/kmem.h:201 __traceiter_mm_page_alloc+0x35/0x50 include/trace/events/kmem.h:201 trace_mm_page_alloc include/trace/events/kmem.h:201 [inline] __alloc_pages+0x6e0/0x700 mm/page_alloc.c:5487 skb_page_frag_refill+0x220/0x4b0 net/core/sock.c:2664 add_recvbuf_mergeable drivers/net/virtio_net.c:1329 [inline] try_fill_recv+0x49d/0x17d0 drivers/net/virtio_net.c:1370 virtnet_receive drivers/net/virtio_net.c:1484 [inline] virtnet_poll+0x83a/0x1260 drivers/net/virtio_net.c:1585 __napi_poll+0xc7/0x440 net/core/dev.c:7043 napi_poll net/core/dev.c:7110 [inline] net_rx_action+0x617/0xda0 net/core/dev.c:7200 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline] RIP: 0010:acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:562 Code: a5 37 f7 48 83 e3 08 0f 85 0a 01 00 00 4c 8d 74 24 20 e8 84 1f 3e f7 0f 1f 44 00 00 e8 1a a1 37 f7 0f 00 2d a3 4f bb 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 db 89 81 f7 RSP: 0018:ffffc90000d67b00 EFLAGS: 000002d3 RAX: ffffffff8a48e476 RBX: 0000000000000000 RCX: ffff88813ff78000 RDX: 0000000000000000 RSI: ffffffff8aab2b80 RDI: ffffffff8af9f2c0 RBP: ffffc90000d67b90 R08: ffffffff81870420 R09: ffffed1027fef001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001acf60 R13: ffff88801eae1804 R14: ffffc90000d67b20 R15: dffffc0000000000 acpi_idle_enter+0x352/0x4f0 drivers/acpi/processor_idle.c:697 cpuidle_enter_state+0x521/0xef0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3e4/0x670 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_secondary+0x371/0x500 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xb1/0xbb ---------------- Code disassembly (best guess), 2 bytes skipped: 0: f7 48 83 e3 08 0f 85 testl $0x850f08e3,-0x7d(%rax) 7: 0a 01 or (%rcx),%al 9: 00 00 add %al,(%rax) b: 4c 8d 74 24 20 lea 0x20(%rsp),%r14 10: e8 84 1f 3e f7 call 0xf73e1f99 15: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 1a: e8 1a a1 37 f7 call 0xf737a139 1f: 0f 00 2d a3 4f bb 00 verw 0xbb4fa3(%rip) # 0xbb4fc9 26: fb sti 27: f4 hlt * 28: 4c 89 f3 mov %r14,%rbx <-- trapping instruction 2b: 48 c1 eb 03 shr $0x3,%rbx 2f: 42 80 3c 3b 00 cmpb $0x0,(%rbx,%r15,1) 34: 74 08 je 0x3e 36: 4c 89 f7 mov %r14,%rdi 39: e8 db 89 81 f7 call 0xf7818a19